- 19 Jan, 2022 10 commits
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José Expósito authored
Avoid leaking the "out" variable if it is not possible to allocate the "txmsg" variable. Fixes: 09234b88 ("drm/selftests/test-drm_dp_mst_helper: Move 'sideband_msg_req_encode_decode' onto the heap") Addresses-Coverity-ID: 1475685 ("Resource leak") Signed-off-by:
José Expósito <jose.exposito89@gmail.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220108165812.46797-1-jose.exposito89@gmail.com
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José Expósito authored
The TTM acronym is defined for the first time in the documentation as "Translation Table Maps". Afterwards, "Translation Table Manager" is used as definition. Fix the first definition to avoid confusion. Signed-off-by:
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KuoHsiang Chou authored
The threshold value is used for AST2600 only. Signed-off-by:
KuoHsiang Chou <kuohsiang_chou@aspeedtech.com> Signed-off-by:
Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220117083643.41493-1-kuohsiang_chou@aspeedtech.com
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Jocelyn Falempe authored
On some servers with MGA G200_SE_A (rev 42), booting with Legacy BIOS, the hardware hangs when using kdump and kexec into the kdump kernel. This happens when the uncompress code tries to write "Decompressing Linux" to the VGA Console. It can be reproduced by writing to the VGA console (0xB8000) after booting to graphic mode, it generates the following error: kernel:NMI: PCI system error (SERR) for reason a0 on CPU 0. kernel:Dazed and confused, but trying to continue The root cause is the configuration of the MGA GCTL6 register According to the GCTL6 register documentation: bit 0 is gcgrmode: 0: Enables alpha mode, and the character generator addressing system is activated. 1: Enables graphics mode, and the character addressing system is not used. bit 1 is chainodd even: 0: The A0 signal of the memory address bus is used during system memory addressing. 1: Allows A0 to be replaced by either the A16 signal of the system address (ifmemmapsl is ‘00’), or by the hpgoddev (MISC<5>, odd/even page select) field, described on page 3-294). bit 3-2 are memmapsl: Memory map select bits 1 and 0. VGA. These bits select where the video memory is mapped, as shown below: 00 => A0000h - BFFFFh 01 => A0000h - AFFFFh 10 => B0000h - B7FFFh 11 => B8000h - BFFFFh bit 7-4 are reserved. Current code set it to 0x05 => memmapsl to b01 => 0xa0000 (graphic mode) But on x86, the VGA console is at 0xb8000 (text mode) In arch/x86/boot/compressed/misc.c debug strings are written to 0xb8000 As the driver doesn't use this mapping at 0xa0000, it is safe to set it to 0xb8000 instead, to avoid kernel hang on G200_SE_A rev42, with kexec/kdump. Thus changing the value 0x05 to 0x0d Signed-off-by:Jocelyn Falempe <jfalempe@redhat.com> Reviewed-by:
Javier Martinez Canillas <javierm@redhat.com> Acked-by:
Lyude Paul <lyude@redhat.com> Cc: stable@vger.kernel.org Signed-off-by:
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Zhiming Liu authored
We have got the device of i2c client in probe function. So we should remove extra device acquisition method of i2c client. Signed-off-by:
Zhiming Liu <lzmlzmhh@gmail.com> Signed-off-by:
Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220117154150.5145-1-lzmlzmhh@gmail.comReviewed-by:
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Thomas Zimmermann authored
Update the include statements for DisplayPort helpers. The header files are in the dp/ subdirectory. Signed-off-by:
kernel test robot <lkp@intel.com> Cc: Lyude Paul <lyude@redhat.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: dri-devel@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20220118154450.25947-1-tzimmermann@suse.de
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Thomas Zimmermann authored
Resolve warnings about non-existing symbols by selecting DRM_DP_HELPER. Signed-off-by:
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Christian König authored
Returning the exclusive fence separately is no longer used. Instead add a write parameter to indicate the use case. Signed-off-by:
Christian König <christian.koenig@amd.com> Reviewed-by:
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Christian König authored
This was added because of the now dropped shared on excl dependency. Signed-off-by:
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Arunpravin authored
Move the base i915 buddy allocator code into drm - Move i915_buddy.h to include/drm - Move i915_buddy.c to drm root folder - Rename "i915" string with "drm" string wherever applicable - Rename "I915" string with "DRM" string wherever applicable - Fix header file dependencies - Fix alignment issues - add Makefile support for drm buddy - export functions and write kerneldoc description - Remove i915 selftest config check condition as buddy selftest will be moved to drm selftest folder cleanup i915 buddy references in i915 driver module and replace with drm buddy v2: - include header file in alphabetical order(Thomas) - merged changes listed in the body section into a single patch to keep the build intact(Christian, Jani) v3: - make drm buddy a separate module(Thomas, Christian) v4: - Fix build error reported by kernel test robot <lkp@intel.com> - removed i915 buddy selftest from i915_mock_selftests.h to avoid build error - removed selftests/i915_buddy.c file as we create a new set of buddy test cases in drm/selftests folder v5: - Fix merge conflict issue v6: - replace drm_buddy_mm structure name as drm_buddy(Thomas, Christian) - replace drm_buddy_alloc() function name as drm_buddy_alloc_blocks() (Thomas) - replace drm_buddy_free() function name as drm_buddy_free_block() (Thomas) - export drm_buddy_free_block() function - fix multiple instances of KMEM_CACHE() entry v7: - fix warnings reported by kernel test robot <lkp@intel.com> - modify the license(Christian) v8: - fix warnings reported by kernel test robot <lkp@intel.com> Signed-off-by:Arunpravin <Arunpravin.PaneerSelvam@amd.com> Acked-by:
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- 18 Jan, 2022 2 commits
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Roberto Sassu authored
If virtio_gpu_object_shmem_init() fails (e.g. due to fault injection, as it happened in the bug report by syzbot), virtio_gpu_array_put_free() could be called with objs equal to NULL. Ensure that objs is not NULL in virtio_gpu_array_put_free(), or otherwise return from the function. Cc: stable@vger.kernel.org # 5.13.x Signed-off-by:
Roberto Sassu <roberto.sassu@huawei.com> Reported-by: syzbot+e9072e90624a31dfa85f@syzkaller.appspotmail.com Fixes: 377f8331 ("drm/virtio: fix possible leak/unlock virtio_gpu_object_array") Link: http://patchwork.freedesktop.org/patch/msgid/20211213183122.838119-1-roberto.sassu@huawei.comSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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Pavel Skripkin authored
Syzbot has reported GPF in sg_alloc_append_table_from_pages(). The problem was in ubuf->pages == ZERO_PTR. ubuf->pagecount is calculated from arguments passed from user-space. If user creates udmabuf with list.size == 0 then ubuf->pagecount will be also equal to zero; it causes kmalloc_array() to return ZERO_PTR. Fix it by validating ubuf->pagecount before passing it to kmalloc_array(). Fixes: fbb0de79 ("Add udmabuf misc device") Reported-and-tested-by: syzbot+2c56b725ec547fa9cb29@syzkaller.appspotmail.com Signed-off-by:
Pavel Skripkin <paskripkin@gmail.com> Link: http://patchwork.freedesktop.org/patch/msgid/20211230142649.23022-1-paskripkin@gmail.comSigned-off-by:
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- 17 Jan, 2022 9 commits
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owen authored
It will connect to the mipi dsi host and find the corresponding mipi dsi host node, but the node registered by the mipi dsi host has not been loaded yet. of_find_mipi_dsi_host_by_node() returns -EINVAL which causes the calling driver to fail. If the anx7625 driver is loaded afterwards the driver requesting the mipi dsi host will not notice this. Better approach is to return -EPROBE_DEFER in such case. Then when the anx7625 driver appears the driver requesting the mipi dsi host will be probed again. Signed-off-by:
owen <qwt9588@gmail.com> Signed-off-by:
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Thomas Zimmermann authored
Move drm_dp_aux_bus.c and its header file into the DP subdirectory and update all users. No functional changes. Signed-off-by:
Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220114114535.29157-6-tzimmermann@suse.de
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Thomas Zimmermann authored
Move all public DisplayPort headers into dp/ and update users. No functional changes. v3: * rebased onto latest drm-tip Signed-off-by:
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Thomas Zimmermann authored
Move DisplayPort functions into a separate module to reduce the size of the KMS helpers. Select DRM_DP_HELPER for all users of the code. To avoid naming conflicts, rename drm_dp_helper.c to drm_dp.c This change can help to reduce the size of the kernel binary. Some numbers from a x86-64 test build: Before: drm_kms_helper.ko: 447480 bytes After: drm_dp_helper.ko: 216632 bytes drm_kms_helper.ko: 239424 bytes For early-boot graphics, generic DRM drivers, such as simpledrm, require DRM KMS helpers to be built into the kernel. Generic helper functions for DisplayPort take up a significant portion of DRM KMS helper library. These functions are not used by generic drivers and can be loaded as a module. v3: * fix include statement in DRM selftests v2: * move DP helper code into dp/ (Jani) Signed-off-by:
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Thomas Zimmermann authored
Split the DP declarations from other helpers before moving the DP functions into a separate module. v2: * forward-declare struct drm_dp_aux (Jani) * add include guards in drm_dp_helper_internal.h Signed-off-by:
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Thomas Zimmermann authored
Fix coding style. Signed-off-by:
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Neil Armstrong authored
This adds support for DRM_BRIDGE_ATTACH_NO_CONNECTOR by adding the bridge get_edid() and detect() callbacks after refactoring the connector get_modes() and connector_detect() callbacks. In order to keep the bridge working, extra code in get_modes() has been moved to more logical places. Signed-off-by:
Neil Armstrong <narmstrong@baylibre.com> Signed-off-by:
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Alexey Sheplyakov authored
On a dual core group GPUs (such as T628) fragment shading can be performed over all cores (because a fragment shader job doesn't need coherency between threads), however vertex shading requires to be run on the same core group as the tiler (which always lives in core group 0). As a first step to support T628 power on only the first core group (so no jobs are scheduled on the second one). This makes T628 look like every other Midgard GPU (and throws away up to half the cores). With this patch panfrost is able to drive T628 (r1p0) GPU on some armv8 SoCs (in particular BE-M1000). Without the patch rendering is horribly broken (desktop is completely unusable) and eventually the GPU locks up (it takes from a few seconds to a couple of minutes). Using the second core group requires support in Mesa (and an UABI change): the userspace should 1) set PANFROST_JD_DOESNT_NEED_COHERENCY_ON_GPU flag to opt-in to allowing the job to run across all cores. 2) set PANFROST_RUN_ON_SECOND_CORE_GROUP flag to allow compute jobs to be run on the second core group (at the moment Mesa does not advertise compute support on anything older than Mali T760) But there's little point adding such flags until someone (myself) steps up to do the Mesa work. Signed-off-by:
Alexey Sheplyakov <asheplyakov@basealt.ru> Signed-off-by:
Vadim V. Vlasov <vadim.vlasov@elpitech.ru> Tested-by:
Steven Price <steven.price@arm.com> Signed-off-by:
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Julian Braha authored
When DRM_CHIPONE_ICN6211 is selected, and DRM_KMS_HELPER is not selected, Kbuild gives the following warning: WARNING: unmet direct dependencies detected for DRM_PANEL_BRIDGE Depends on [n]: HAS_IOMEM [=y] && DRM_BRIDGE [=y] && DRM_KMS_HELPER [=n] Selected by [y]: - DRM_CHIPONE_ICN6211 [=y] && HAS_IOMEM [=y] && DRM [=y] && DRM_BRIDGE [=y] && OF [=y] This is because DRM_CHIPONE_ICN6211 selects DRM_PANEL_BRIDGE without depending on or selecting DRM_KMS_HELPER, despite DRM_PANEL_BRIDGE depending on DRM_KMS_HELPER. This unmet dependency bug was detected by Kismet, a static analysis tool for Kconfig. Fixes: ce517f18 ("drm: bridge: Add Chipone ICN6211 MIPI-DSI to RGB bridge") Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
Julian Braha <julianbraha@gmail.com> Signed-off-by:
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- 14 Jan, 2022 12 commits
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Colin Ian King authored
Pointer bufs is being initialized with a value that is never read, it is being re-assigned with a different value later on. The assignment is redundant and can be removed. Cleans up clang-scan warning: drivers/video/fbdev/s3c-fb.c:492:16: warning: Value stored to 'buf' during its initialization is never read [deadcode.DeadStores] void __iomem *buf = regs; Signed-off-by:Colin Ian King <colin.i.king@gmail.com> Signed-off-by:
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Colin Ian King authored
Variable Ftarget is being initialized with a value that is never read, it is being re-assigned a different value a little later on. The assignment is redundant and can be removed. Signed-off-by:
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Thomas Zimmermann authored
Fix the compiler warning drivers/char/agp/via-agp.c: In function 'via_configure_agp3': drivers/char/agp/via-agp.c:131:35: warning: variable 'current_size' set but not used [-Wunused-but-set-variable] 131 | struct aper_size_info_16 *current_size; by removing the variable. Signed-off-by:Helge Deller <deller@gmx.de> Link: https://patchwork.freedesktop.org/patch/msgid/20211201114645.15384-8-tzimmermann@suse.de
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Thomas Zimmermann authored
Fix the compiler warning drivers/char/agp/sworks-agp.c: In function 'serverworks_configure': drivers/char/agp/sworks-agp.c:265:37: warning: variable 'current_size' set but not used [-Wunused-but-set-variable] 265 | struct aper_size_info_lvl2 *current_size; by removing the variable. Signed-off-by: -
Thomas Zimmermann authored
Fix the compiler warning drivers/char/agp/nvidia-agp.c: In function 'nvidia_tlbflush': drivers/char/agp/nvidia-agp.c:264:22: warning: variable 'temp' set but not used [-Wunused-but-set-variable] 264 | u32 wbc_reg, temp; by marking the temp variable with __maybe_unused. The affected readl() is only required for flushing caches, but the returned value is not of interest. v2: * declare temp as __maybe_unused (Helge) Signed-off-by: -
Thomas Zimmermann authored
Fix the compiler warning drivers/char/agp/ati-agp.c: In function 'ati_create_page_map': drivers/char/agp/ati-agp.c:58:16: warning: variable 'err' set but not used [-Wunused-but-set-variable] 58 | int i, err = 0; by returing the error to the caller. v2: * free page in error branch (Helge) Signed-off-by: -
Thomas Zimmermann authored
Fix compiler warnings drivers/char/agp/backend.c:68: warning: Function parameter or member 'pdev' not described in 'agp_backend_acquire' drivers/char/agp/backend.c:93: warning: Function parameter or member 'bridge' not described in 'agp_backend_release' by adding the necessary documentation. Signed-off-by:
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Thomas Zimmermann authored
Fix compiler warnings like drivers/char/agp/frontend.c:46:20: warning: no previous prototype for 'agp_find_mem_by_key' [-Wmissing-prototypes] 46 | struct agp_memory *agp_find_mem_by_key(int key) by including the compat_ioctl.h in the source file. Signed-off-by: -
Thomas Zimmermann authored
Trivial coding-style fix. Signed-off-by:
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Colin Ian King authored
The variable 'size' is being assigned a value that is never read, the assignment is redundant and can be removed. Cleans up clang-scan warning: drivers/gpu/drm/vc4/vc4_bo.c:358:2: warning: Value stored to 'size' is never read [deadcode.DeadStores] size = roundup(size, PAGE_SIZE); Signed-off-by:Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20220112232036.1182846-1-colin.i.king@gmail.com
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Drew Davenport authored
ctx->next_bridge is checked for NULL twice in a row. The second conditional is redundant, so remove it. Signed-off-by:
Drew Davenport <ddavenport@chromium.org> Acked-by:
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Guchun Chen authored
Otherwise, braces are needed when using it. Signed-off-by:
Guchun Chen <guchun.chen@amd.com> Acked-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220114083742.6219-1-guchun.chen@amd.comSigned-off-by:
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- 13 Jan, 2022 7 commits
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Jagan Teki authored
Replace atomic version of the enable/disable operations to continue the transition to the atomic API. Also added default drm atomic operations for duplicate, destroy and reset state API's in order to have smooth transition on atomic API's. Tested on Engicam i.Core STM32MP1 SoM. Signed-off-by:
Jagan Teki <jagan@amarulasolutions.com> Signed-off-by:
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José Expósito authored
The "drm_plane_funcs.format_mod_supported" can be removed in favor of the default implementation. Signed-off-by:
Yannick Fertre <yannick.fertre@foss.st.com> Tested-by:
Philippe Cornu <philippe.cornu@foss.st.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211222090552.25972-7-jose.exposito89@gmail.com
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Yannick Fertre authored
This patch adds the following YCbCr input pixel formats on the latest LTDC hardware version: 1 plane (co-planar) : YUYV, YVYU, UYVY, VYUY 2 planes (semi-planar): NV12, NV21 3 planes (full-planar): YU12=I420=DRM YUV420, YV12=DRM YVU420 Signed-off-by:
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Yannick Fertre authored
This feature allows the generation of any RGB pixel format. The list of supported formats is no longer linked to the register LXPFCR_PF, that the reason why a list of drm formats is defined for each display controller version. Signed-off-by:
Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com> Tested-by:
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Yannick Fertre authored
Recent ltdc hardware versions offer the ability to update a plane independently of others planes. This is could be useful especially if a plane is assigned to another OS. Signed-off-by:
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Yannick Fertre authored
LTDC 40100 hw version supports the YCbCr 422 output, reducing the output pins from 24 to 16. This feature is useful for some external devices like HDMI bridges. Both ITU-R BT.601 & ITU-R BT.709 are supported. It is also possible to choose the chrominance order between * Cb is output first (Y0Cb, then Y1Cr, Y2Cb and so on). * Cr is output first (Y0Cr, then Y1Cb, Y2Cr and so on). Signed-off-by:
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Yannick Fertre authored
Replace the legacy register access by regmap API. Signed-off-by:
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